This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A089283 #16 Mar 14 2025 18:52:55 %S A089283 1,1,2,3,3,1,4,3,6,3,4,2,3,3,3,3,7,2,6,9,4,6,7,8,3,5,8,3,6,6,4,6,8,2, %T A089283 5,7,7,1,5,2,4,6,3,5,4,6,6,3,10,3,5,6,3,6,8,6,4,5,4,6,9,7,3,9,4,6,5,6, %U A089283 3,6,8,10,6,7,8,5,5,7,14,5,5,4,7,7,6,8 %N A089283 Total number of prime factors of floor(Pi*10^n), Pi=3.14... %H A089283 Tyler Busby, <a href="/A089283/b089283.txt">Table of n, a(n) for n = 0..200</a> %F A089283 a(n) = A001222(A011545(n)). %e A089283 n=6: floor(Pi*10^6) = 3141592 = 2*2*2*392699: a(6)=4. %Y A089283 Cf. A001222, A011545, A089282, A000796. %K A089283 nonn %O A089283 0,3 %A A089283 _Reinhard Zumkeller_, Oct 30 2003 %E A089283 More terms from _Ray Chandler_, Oct 31 2003 %E A089283 a(81)-a(85) from _Tyler Busby_, Mar 14 2025